Abstract
M, E. REYNIER has described, in l'Électricien, a research made by him on the maxima and minima of electromotive force of certain batteries in which polarisation takes place. These he calls “single-electrolyte” batteries, instead of “single-fluid” batterie, following a suggestion of the late M. Niaudet. The difference consists in the relative size of the electrodes. For example, in the case of a zinc-copper cell containing a single electrolytic fluid, the maximum cell is made with a kathode of sheet-copper folded and curved, presenting 300 times as much surface as the thin copper rod which serves as anode, whilst in the minimum cell the proportion is reversed, so that the polarisation at the surface of the copper attains at once its maximum value. The value of the E.M. F. of the cells when filled with dilute sulphuric acid, and having the zinc amalgamated, was 1.072 volts maximum, and 0.272 volts minimum. Many other electrolytes were examined by M. Reynier. The electromotive force was measured upon a galvanometer of high resistance.
Article PDF
Rights and permissions
About this article
Cite this article
Physical Notes . Nature 29, 226–227 (1884). https://doi.org/10.1038/029226a0
Issue Date:
DOI: https://doi.org/10.1038/029226a0